LMI Roytronic Series A Pump FastPrime


The FastPrime™ Head is equipped with a valve that allows for opening the head to atmospheric pressure. When installing a pump equipped with a FastPrime™ Head connect the 3/8″ outer diameter clear vinyl tubing provided with the pump to the barbed nozzle. Route the vinyl return line back to the solution tank. This tubing must not be submerged in the solution.Metering Pump


The AutoPrime™ Liquid End is equipped with a valve that allows for constant removal of vapors and gasses inherent with effervescent chemicals such as Sodium Hypochlorite and Hydrogen Peroxide. The valve keeps the pump primed automatically. When installing a pump equipped with an AutoPrime™ Liquid End connect the 1/2″ OD Polyethylene tubing to the top vertical fitting, and route this line back to the supply tank. To ensure priming, this tubing should not be submerged in the solution. The horizontal fitting is the discharge, and the bottom vertical fitting is the suction.Series A Instruction manual


Foot Valve/Suction Tubing Installation

Suction Tubing InstallationThe Foot Valve acts as a check valve to keep the pump primed in suction lift applications.

The foot valve is designed to be submersed in the solution tank or drum and must sit in a vertical position at the bottom. Position approximately 2 inches (50 mm) off the bottom if the tank or drum contains sediment.

The ceramic weight, when installed, helps position the foot valve in a vertical position.

  1. Attach the foot valve to one end of the suction tubing (see Tubing Connections, Section 3.3).
  2. Slide the ceramic weight over the tubing end until it contacts the top of the foot valve coupling nut.
  3. Place foot valve and tubing into the solution tank. Check that the foot valve is vertical and approximately 2 inches (50 mm) from the bottom of the tank or drum (see illustration). Connect the other end of the tubing to the suction side of the pump head (bottom side) (see Tubing Connections, Section 3.3).

Chemical Pumps US Manual

Injection Check Valve and Discharge Tubing Installation

The Injection Check Valve prevents backflow from a treated line. Install the injection check valve at the location where chemical is being injected into the system. Any size NPTF fitting or pipe tee with a reducing bushing to 1/2″ NPTF will accept the injection check valve. Teflon® tape should only be used on threads that are connected with pipes.
When installing the Injection Check Valve, be sure to position it so that the valve enters the bottom of your pipe in a vertical position. Variations left and right within 80° are acceptable (see illustration).
After cutting an appropriate length of tubing, connect tubing to the injection check valve then back to the discharge side of the pump head. Make sure it does not crimp or come into contact with hot or sharp surfaces (see Tubing Connections, Section 3.3).

LMI Pump Manual

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